Congress did not overstep its bounds when it expanded the Federal Kidnapping Act to cover some abductions that do not cross state lines, a judge ruled.In a written opinion this week, U.S. District Judge Harry D. Leinenweber declined to throw out an indictment against a man accused of kidnapping and assaulting three women who had advertised their sexual services on such websites as Backpage and Craigslist.Leinenweber rejected Keith DeWitt Davis’ argument that Congress ran afoul of the commerce clause when it amended …